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<title>Method 1: provide member functions and nested types</title>
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<div class="section" title="Method 1: provide member functions and nested types">
<div class="titlepage"><div><div><h4 class="title">
<a name="range.reference.extending.method_1"></a><a class="link" href="method_1.html" title="Method 1: provide member functions and nested types"> Method 1: provide
        member functions and nested types</a>
</h4></div></div></div>
<p>
          This procedure assumes that you have control over the types that should
          be made conformant to a Range concept. If not, see <a class="link" href="method_2.html" title="Method 2: provide free-standing functions and specialize metafunctions">method
          2</a>.
        </p>
<p>
          The primary templates in this library are implemented such that standard
          containers will work automatically and so will <a href="../../../../../../../libs/array/index.html" target="_top">boost::array</a>.
          Below is given an overview of which member functions and member types a
          class must specify to be useable as a certain Range concept.
        </p>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
</colgroup>
<thead><tr>
<th>
                  <p>
                    Member function
                  </p>
                </th>
<th>
                  <p>
                    Related concept
                  </p>
                </th>
</tr></thead>
<tbody>
<tr>
<td>
                  <p>
                    <code class="computeroutput"><span class="identifier">begin</span><span class="special">()</span></code>
                  </p>
                </td>
<td>
                  <p>
                    <a class="link" href="../../concepts/single_pass_range.html" title="Single Pass Range">Single Pass
                    Range</a>
                  </p>
                </td>
</tr>
<tr>
<td>
                  <p>
                    <code class="computeroutput"><span class="identifier">end</span><span class="special">()</span></code>
                  </p>
                </td>
<td>
                  <p>
                    <a class="link" href="../../concepts/single_pass_range.html" title="Single Pass Range">Single Pass
                    Range</a>
                  </p>
                </td>
</tr>
</tbody>
</table></div>
<p>
          Notice that <code class="computeroutput"><span class="identifier">rbegin</span><span class="special">()</span></code>
          and <code class="computeroutput"><span class="identifier">rend</span><span class="special">()</span></code>
          member functions are not needed even though the container can support bidirectional
          iteration.
        </p>
<p>
          The required member types are:
        </p>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
</colgroup>
<thead><tr>
<th>
                  <p>
                    Member type
                  </p>
                </th>
<th>
                  <p>
                    Related concept
                  </p>
                </th>
</tr></thead>
<tbody>
<tr>
<td>
                  <p>
                    <code class="computeroutput"><span class="identifier">iterator</span></code>
                  </p>
                </td>
<td>
                  <p>
                    <a class="link" href="../../concepts/single_pass_range.html" title="Single Pass Range">Single Pass
                    Range</a>
                  </p>
                </td>
</tr>
<tr>
<td>
                  <p>
                    <code class="computeroutput"><span class="identifier">const_iterator</span></code>
                  </p>
                </td>
<td>
                  <p>
                    <a class="link" href="../../concepts/single_pass_range.html" title="Single Pass Range">Single Pass
                    Range</a>
                  </p>
                </td>
</tr>
</tbody>
</table></div>
<p>
          Again one should notice that member types <code class="computeroutput"><span class="identifier">reverse_iterator</span></code>
          and <code class="computeroutput"><span class="identifier">const_reverse_iterator</span></code>
          are not needed.
        </p>
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<td align="right"><div class="copyright-footer">Copyright &#169; 2003 -2010 Thorsten Ottosen, Neil Groves<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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